[C++11] Replace llvm::tie with std::tie.

llvm-svn: 202639
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 8d1b401..ba53db0 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -109,7 +109,7 @@
 
   unsigned IncludedFlagsBitmask;
   unsigned ExcludedFlagsBitmask;
-  llvm::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
+  std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
     getIncludeExcludeOptionFlagMasks();
 
   unsigned MissingArgIndex, MissingArgCount;
@@ -619,7 +619,7 @@
 void Driver::PrintHelp(bool ShowHidden) const {
   unsigned IncludedFlagsBitmask;
   unsigned ExcludedFlagsBitmask;
-  llvm::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
+  std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
     getIncludeExcludeOptionFlagMasks();
 
   ExcludedFlagsBitmask |= options::NoDriverOption;